Basically, engraving a laptop is functional to avoid your laptop to be a target of theft.

It is a good solution, remembering that labels or markers tend to disappear along the time. In this case, if you engrave your laptop, removing the engraving will damage your laptop and it will decrease the value. That is why, the thieves tend to avoid to steal the engraved laptop.
Great engraving is all about conveying your message clearly, while being done in a style and design that reflects what you are presenting it for. While a standard font and layout can achieve this, so much more can be added to the impression and feel of the award with good graphic design.
To find the machine that it is right for you, you will want to shop around. There are different sizes and different options available. You must have in mind what you intend to use the machine for and then you have to make sure that the motor, rpm speed, and so on will allow you to perform your job accurately. These machines are affordable, but you don't want to waste your money purchasing the wrong machine.
The laser is usually in the form of a pencil while the controller may be a computer. The beam emitted from the pencil allows the computer or controller to trace patterns onto the surface which is usually picked to match what the laser can work upon. The controller or computer is the director here. It controls the intensity, direction, the speed and the spread of the laser beam targeted on the surface.
 To achieve a quality image, the top coat must be completely removed with minimal impact on the underlying plastic or secondary coat. To maximize the ratio of light absorption between the two layers, the top coat must always be a dark color and the contrasting underlying layer must be a light color. The dark color will absorb a comparatively higher percentage of the laser light, resulting in a higher surface temperature, while the light color reflects a higher percentage and minimizes the temperature rise. The underlying plastic, paint, or ink should also be thick enough to tolerate a minor amount of material removal during marking.
 Some marking machines are handheld and utilizes 12 to 24 volt of current. These are convenient and can be moved from one place to another very easily. This would be an ideal apparatus for large direct part making, 2d matrix codes, UID and barcode applications. The standard configuration of the appliance helps to the needs of production. It also executes with the graphical based programming for the minimal lean curves.